hi , my flight from cvg to jfk to royal Jordanian . my question Can I get to extra luggage and how is the charge

Please call your airline for more information. The airport does not have this info

Call airline directly or check their site

Depending on how you booked your flight, you may need to contact the airline from CVG to JFK to get baggage rates. Next, contact the Airline going from JFK to Royal Jordania about baggage rates. If it's the same airline it could be one fee. If differing, it could be otherwise.